Exporting Motion Tracking Data from Blender to After Effects
There is a plugin for this:

http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Import-Export/Adobe_After_Effects

Setup

To enable it you can use the user preferences File>User Preferences (CtrlAltU)

Go to the addons tab

Search for "After Effects" if the plugin pops up, enable it.

If nothing comes up, download the addon, and install it using these steps:

https://blender.stackexchange.com/a/1689/3127

Usage

Select the objects and camera etc that you wish to export, and go to File>Export>Adobe After Effect (.jsx)

Save the file.

Open After Effects (Version > CS2)

File>Scripts>Run Script File and select your file. It will ask you to name the comp. Any name will work

Next, after it is done, go into the Project panel and open up your comp. A bunch of nulls and a camera should be there, matching the motion of the ones in blender.